Revert r237954, "Resubmit r237708 (MIR Serialization: print and parse LLVM IR using MIR format)."

It brought cyclic dependencies between LLVMCodeGen and LLVMMIR.

llvm-svn: 238007

1 files changed, 0 insertions, 90 deletions

diff --git a/llvm/lib/CodeGen/MIR/MIRParser.cpp b/llvm/lib/CodeGen/MIR/MIRParser.cpp
deleted file mode 100644
index e484046b23b..00000000000
--- a/llvm/lib/CodeGen/MIR/MIRParser.cpp
+++ /dev/null
@@ -1,90 +0,0 @@
-//===- MIRParser.cpp - MIR serialization format parser implementation -----===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the class that parses the optional LLVM IR and machine
-// functions that are stored in MIR files.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/CodeGen/MIR/MIRParser.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/AsmParser/Parser.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Support/SMLoc.h"
-#include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/YAMLTraits.h"
-#include <memory>
-
-using namespace llvm;
-
-namespace {
-
-/// This class implements the parsing of LLVM IR that's embedded inside a MIR
-/// file.
-class MIRParserImpl {
-  SourceMgr SM;
-  StringRef Filename;
-  LLVMContext &Context;
-
-public:
-  MIRParserImpl(std::unique_ptr<MemoryBuffer> Contents, StringRef Filename,
-                LLVMContext &Context);
-
-  /// Try to parse the optional LLVM module in the MIR file.
-  ///
-  /// Return null if an error occurred while parsing the LLVM module.
-  std::unique_ptr<Module> parseLLVMModule(SMDiagnostic &Error);
-};
-
-} // end anonymous namespace
-
-MIRParserImpl::MIRParserImpl(std::unique_ptr<MemoryBuffer> Contents,
-                             StringRef Filename, LLVMContext &Context)
-    : SM(), Filename(Filename), Context(Context) {
-  SM.AddNewSourceBuffer(std::move(Contents), SMLoc());
-}
-
-std::unique_ptr<Module> MIRParserImpl::parseLLVMModule(SMDiagnostic &Error) {
-  yaml::Input In(SM.getMemoryBuffer(SM.getMainFileID())->getBuffer());
-
-  // Parse the block scalar manually so that we can return unique pointer
-  // without having to go trough YAML traits.
-  if (In.setCurrentDocument()) {
-    if (const auto *BSN =
-            dyn_cast_or_null<yaml::BlockScalarNode>(In.getCurrentNode())) {
-      return parseAssembly(MemoryBufferRef(BSN->getValue(), Filename), Error,
-                           Context);
-    }
-  }
-
-  // Create an new, empty module.
-  return llvm::make_unique<Module>(Filename, Context);
-}
-
-std::unique_ptr<Module> llvm::parseMIRFile(StringRef Filename,
-                                           SMDiagnostic &Error,
-                                           LLVMContext &Context) {
-  auto FileOrErr = MemoryBuffer::getFile(Filename);
-  if (std::error_code EC = FileOrErr.getError()) {
-    Error = SMDiagnostic(Filename, SourceMgr::DK_Error,
-                         "Could not open input file: " + EC.message());
-    return std::unique_ptr<Module>();
-  }
-  return parseMIR(std::move(FileOrErr.get()), Error, Context);
-}
-
-std::unique_ptr<Module> llvm::parseMIR(std::unique_ptr<MemoryBuffer> Contents,
-                                       SMDiagnostic &Error,
-                                       LLVMContext &Context) {
-  auto Filename = Contents->getBufferIdentifier();
-  MIRParserImpl Parser(std::move(Contents), Filename, Context);
-  return Parser.parseLLVMModule(Error);
-}